Injection mold with self-locking structure

Abstract

This utility model discloses an injection mold with a self-locking structure, belonging to the field of injection mold technology. It includes a movable plate and a lower mold. The movable plate has multiple sliding sleeves embedded within it, and sliding rods are slidably connected within the sleeves. A limit block is connected to the top of each sliding rod, and the bottom of the multiple sliding rods is connected to the same connecting plate. An upper mold is connected to the bottom of the connecting plate. In this utility model, the connecting plate moves downward, causing the two side insertion plates to move downward, allowing the insertion plates to insert into insertion slots. The bottom of the insertion plate presses against a locking block, causing the locking block to move to one side and press against a first spring, generating a rebound force. Then, when the insertion plate and the upper mold move to the desired position, the locking block returns to its original position due to the rebound of the first spring, allowing it to insert into the locking slot and fix the insertion plate. The insertion plate, through the connecting plate, fixes the upper mold, preventing displacement of the upper mold during injection molding and thus avoiding impact on production quality.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular relates to an injection mold with a self-locking structure. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors and shapes, shapes ranging from simple to complex, sizes ranging from large to small, precise product dimensions, easy product updates and replacements, and the ability to produce complex-shaped parts. Injection molding is suitable for mass production and molding processing fields such as complex-shaped products. However, injection molding requires the use of injection molds.

[0003] However, in actual use, traditional injection molds may be subjected to the impact of high-pressure molten plastic, which can cause displacement of components such as sliders and inserts, resulting in problems such as flash and dimensional deviations in the product. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that traditional injection molds are prone to displacement during injection, which affects production quality, and to propose an injection mold with a self-locking structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold with a self-locking structure, comprising a movable plate and a lower mold, wherein the movable plate is embedded with multiple sliding sleeves, and sliding rods are slidably connected within the sliding sleeves; a limit block is connected to the top of each sliding rod, and the bottom of the multiple sliding rods is connected to the same connecting plate; an upper mold is connected to the bottom of the connecting plate; and two locking devices are provided at the top of the lower mold, each locking device comprising an insertion groove and a support box; a movable groove is provided on one side of the insertion groove; an insertion plate is inserted into the insertion groove; a snap-fit ​​groove is provided within the insertion plate; movable grooves are provided on both sides of the inner wall of the movable groove; movable blocks are slidably connected within the movable grooves; a first spring is connected to one side of each of the two movable blocks; and the same snap-fit ​​block is connected between the two movable blocks; and a connecting block is connected to one side of the snap-fit ​​block.

[0006] As a further description of the above technical solution:

[0007] The insertion slot is opened on the top of the lower mold, and the other end of the first spring is connected to one side of the inner wall of the moving slot. A through hole is opened in the moving block, and a support rod is slidably connected in the through hole. The two ends of the support rod are respectively connected to the two sides of the inner wall of the moving slot, and the first spring is sleeved on the outside of the support rod.

[0008] As a further description of the above technical solution:

[0009] One side of the support box is connected to one side of the movable plate. A sliding sleeve seat is slidably connected inside the support box. A sliding rod is slidably connected inside the sliding sleeve seat. The two ends of the sliding rod are respectively connected to the two sides of the inner wall of the support box. A second spring is sleeved on the outer wall of the sliding rod. The two ends of the second spring are respectively connected to one side of the inner wall of the support box and one side of the sliding sleeve seat. A support rod is connected to the bottom of the sliding sleeve seat. A transmission block is connected to one side of the support rod.

[0010] As a further description of the above technical solution:

[0011] The support rod has a rotating groove, and a rotating rod is rotatably connected in the rotating groove. One end of the rotating rod is connected to an extrusion block. The bottom of the extrusion block is provided with an extrusion slope. The bottom of the support rod is connected to a connecting plate, and a baffle is connected to one side of the connecting plate.

[0012] As a further description of the above technical solution:

[0013] A transmission groove is provided on one side of the connecting block, and a margin guide groove is provided at the bottom of the transmission groove.

[0014] As a further description of the above technical solution:

[0015] Anti-deviation grooves are provided at the four corners of the top of the lower mold, and anti-deviation rods are slidably connected in the anti-deviation grooves. The top of the anti-deviation rods is connected to the bottom of the moving plate.

[0016] As a further description of the above technical solution:

[0017] The lower mold is provided with two protective devices at its top. Each protective device includes a protective groove, which is located at the top of the lower mold. The inner walls of the protective grooves are provided with sliding grooves on both sides, and sliders are slidably connected in the sliding grooves. The two sliders are connected to the same protective plate. The bottom of the protective plate is provided with two fixing grooves, and fixing rods are slidably connected in the fixing grooves. The bottom of the fixing rods is connected to the bottom of the inner wall of the protective groove. A third spring is sleeved on the outer wall of the fixing rods, and the two ends of the third springs are respectively connected to the bottom of the protective plate and the bottom of the inner wall of the protective groove.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. In this utility model, by setting a locking device, the moving plate moves downward through the driving module, which in turn causes the moving plate to move downward through the sliding rod. The connecting plate moves downward through the connecting plate, and during the downward movement of the connecting plate, it causes the plug-in plates on both sides to move downward, so that the plug-in plates are inserted into the plug-in slots. The bottom of the plug-in plate presses the snap-fit ​​block, causing the snap-fit ​​block to move to one side and press the first spring through the moving plate, so that the first spring generates a rebound force. Then, when the plug-in plate and the upper mold move to the required position, the snap-fit ​​block is reset by the rebound of the first spring, so that the snap-fit ​​block is inserted into the snap-fit ​​slot, fixing the plug-in plate. The plug-in plate fixes the upper mold through the connecting plate, preventing the upper mold from being displaced due to pressure during injection molding, which would affect the production quality.

[0020] 2. In this utility model, by setting a protective device, the protective plate is squeezed when the moving plate moves down, causing the protective plate to move downward and squeeze the third spring, so that the third spring generates a rebound force. The rebound force of the third spring causes the top of the protective plate to fit with the bottom of the moving plate, thereby making the protective plate block the gap between the upper mold and the lower mold, preventing the raw material from being sprayed out of the gap due to high pressure during injection molding and causing damage. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an injection mold with a self-locking structure proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the fitting structure of the upper and lower molds of an injection mold with a self-locking structure proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the plug-in plate structure of an injection mold with a self-locking structure proposed in this utility model;

[0024] Figure 4 This utility model proposes an injection mold with a self-locking structure. Figure 3 Enlarged structural diagram of section A;

[0025] Figure 5 This is a schematic diagram of the support rod structure of an injection mold with a self-locking structure proposed in this utility model;

[0026] Figure 6 This is a schematic diagram of a protective device for an injection mold with a self-locking structure proposed in this utility model.

[0027] Legend: 1. Moving plate; 2. Lower mold; 3. Limiting block; 4. Sliding rod; 5. Connecting plate; 6. Upper mold; 7. Anti-deviation rod; 8. Locking device; 801. Snap-fit ​​groove; 802. Insertion plate; 803. Moving groove; 804. Insertion groove; 805. Movable groove; 806. First spring; 807. Support box; 808. Sliding sleeve seat; 809. Sliding rod; 810. Second spring; 811. Snap-fit ​​block; 812. Support rod; 813. Connecting block; 814. Transmission groove; 815. Baffle; 816. Transmission block; 817. Connecting plate; 818. Extrusion block; 819. Rotating rod; 820. Moving block; 821. Support rod; 9. Protective device; 901. Protective groove; 902. Protective plate; 903. Fixing rod; 904. Third spring; 905. Sliding block; 10. Anti-deviation groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] Please see Figures 1-6This utility model provides a technical solution: an injection mold with a self-locking structure, including a movable plate 1 and a lower mold 2. The movable plate 1 has multiple sliding sleeves embedded within it, and sliding rods 4 are slidably connected within each sleeve. Limit blocks 3 are connected to the tops of the sliding rods 4, and the bottoms of the multiple sliding rods 4 are connected to the same connecting plate 5. An upper mold 6 is connected to the bottom of the connecting plate 5. The lower mold 2 has two locking devices 8 at its top. Each locking device 8 includes an insertion groove 804 and a support box 807. A movable groove 805 is opened on one side of the insertion groove 804, and an insertion plate 802 is inserted into the insertion groove 804. The lower mold 2 has a snap-fit ​​groove 801. The movable groove 805 has two sliding grooves 803 on both sides of its inner wall. A movable block 820 is slidably connected within the sliding groove 803. A first spring 806 is connected to one side of each of the two movable blocks 820. A snap-fit ​​block 811 connects the two movable blocks 820, and a connecting block 813 is connected to one side of the snap-fit ​​block 811. An insertion groove 804 is located at the top of the lower mold 2. The other end of the first spring 806 is connected to one side of the inner wall of the sliding groove 803. A through hole is formed within the movable block 820, and a support rod 821 is slidably connected within the through hole. The two ends of support rod 821 are respectively connected to the two sides of the inner wall of the movable groove 803. The first spring 806 is sleeved on the outside of support rod 821. One side of support box 807 is connected to one side of movable plate 1. A sliding sleeve seat 808 is slidably connected inside support box 807. A sliding rod 809 is slidably connected inside sliding sleeve seat 808. The two ends of sliding rod 809 are respectively connected to the two sides of the inner wall of support box 807. A second spring 810 is sleeved on the outer wall of sliding rod 809. The two ends of second spring 810 are respectively connected to one side of the inner wall of support box 807 and one side of sliding sleeve seat 808. A support rod 812 is connected to the bottom of sliding sleeve seat 808. A transmission block 816 is connected to one side. A rotating groove is opened in the support rod 812, and a rotating rod 819 is rotatably connected in the rotating groove. One end of the rotating rod 819 is connected to an extrusion block 818. The bottom of the extrusion block 818 is provided with an extrusion slope. A connecting plate 817 is connected to the bottom of the support rod 812. A baffle 815 is connected to one side of the connecting plate 817. A transmission groove 814 is opened on one side of the connecting block 813, and the bottom of the transmission groove 814 is provided with a clearance guide groove. Anti-deviation grooves 10 are opened at the four corners of the top of the lower mold 2, and anti-deviation rods 7 are slidably connected in the anti-deviation grooves 10. The top of the anti-deviation rods 7 is connected to the bottom of the moving plate 1.

[0030] In a specific implementation, by setting a locking device 8, the driving push rod in the driving module drives the moving plate 1 to move downward. The moving plate 1 drives the sliding rod 4 to move downward, the sliding rod 4 drives the connecting plate 5 to move downward, and the connecting plate 5 moves downward, causing the plug-in plates 802 on both sides to move downward, so that the plug-in plates 802 are inserted into the plug-in slots 804. When the bottom of the plug-in plate 802 contacts the inclined surface of one side of the snap-fit ​​block 811, the snap-fit ​​block 811 is pressed to move to one side. The snap-fit ​​block 811 drives the moving block 820 to move, so that the moving block 820 presses the first spring 806. The first spring 806 is supported by a support rod 821 to prevent the first spring 806 from bending during compression and affecting the rebound effect of the first spring 806. Then, the snap-fit ​​block 811... After one side aligns with the snap-fit ​​groove 801, the moving block 820 is reset by the rebound of the first spring 806, causing the moving block 820 to drive the snap-fit ​​block 811 to reset. When the snap-fit ​​block 811 resets and moves, it inserts into the snap-fit ​​groove 801, thereby fixing the insertion plate 802. The insertion plate 802 is fixed to the upper mold 6 through the connecting plate 5 to prevent the upper mold 6 from shifting due to pressure during injection molding, which would affect the production quality. The moving plate 1 drives the support boxes 807 on both sides to move down. The support boxes 807 drive the support rod 812 to move down through the sliding sleeve seat 808, causing the support rod 812 to drive the extrusion block 818 to move down through the rotating groove. When the bottom inclined surface of the extrusion block 818 contacts the top of the connecting block 813, the inclined surface guides the extrusion, causing the extrusion block 818 to drive the connecting rod. The moving block 820 moves to one side, causing the sliding sleeve seat 808 to move. During the movement, the moving block 820 compresses the second spring 810. When one side of the compression block 818 is misaligned with the bottom of the connecting block 813, the sliding sleeve seat 808, through the rebound force of the second spring 810, drives the support rod 812 to reset, aligning the transmission block 816 on one side of the support rod 812 with the transmission groove 814. When material needs to be picked up, the moving plate 1 moves the sliding sleeve seat 808 upward through the sliding rod 809. The sliding sleeve seat 808, through the support rod 812, moves the transmission block 816 upward, causing the transmission block 816 to slide within the transmission groove 814. Through the inclined transmission groove 814, the connecting block 813 moves to one side. The movement of the connecting block 813 causes the locking block 811 to move, allowing the locking block 811 to slide out of the locking groove 801. This causes the plug plate 802 to lose its fixing effect. By setting the transmission block 816 to slide halfway in the transmission groove 814, the snap block 811 has already slid out of the snap groove 801. When the transmission block 816 moves to the top two-thirds of the transmission groove 814, the bottom of the limit block 3 is in contact with the top of the moving plate 1, so that the limit block 3 drives the connecting plate 5 to move upward through the sliding rod 4. The connecting plate 5 drives the upper mold 6 to move upward, so that the upper mold 6 is separated from the lower mold 2 for material removal. When the extrusion block 818 moves upward, the bottom of the connecting block 813 is set to squeeze, so that the extrusion block 818 rotates around the rotating rod 819, ensuring that the extrusion block 818 does not generate tension when rising, thereby avoiding the top of the extrusion block 818 and the bottom of the connecting block 813 from being stuck and affecting the operation.

[0031] The lower mold 2 is provided with two protective devices 9 on its top. The protective device 9 includes a protective groove 901, which is located on the top of the lower mold 2. The inner wall of the protective groove 901 is provided with sliding grooves on both sides, and a slider 905 is slidably connected in the sliding groove. The two sliders 905 are connected to the same protective plate 902. The bottom of the protective plate 902 is provided with two fixing grooves, and a fixing rod 903 is slidably connected in the fixing groove. The bottom of the fixing rod 903 is connected to the bottom of the inner wall of the protective groove 901. A third spring 904 is sleeved on the outer wall of the fixing rod 903. The two ends of the third spring 904 are respectively connected to the bottom of the protective plate 902 and the bottom of the inner wall of the protective groove 901.

[0032] In a specific implementation, by setting up a protective device 9, the protective plate 902 is squeezed when the moving plate 1 moves downward, causing the protective plate 902 to move downward and squeeze the third spring 904, which in turn generates a rebound force. By setting the sliders 905 on both sides of the protective plate 902 to slide in the groove, the protective plate 902 is prevented from shifting left and right during movement, which could cause jamming and affect its use. When the moving plate 1 moves to the desired position, the rebound force of the third spring 904 causes the top of the protective plate 902 to fit against the bottom of the moving plate 1, thereby making the protective plate 902 block the gap between the upper mold 6 and the lower mold 2, preventing the raw material from being sprayed out of the gap due to high pressure during injection molding and causing injury to surrounding personnel.

[0033] Working principle: In use, when the moving plate 1 is driven downward by the drive module, the moving block 820 moves the sliding rod 4 downward, the sliding rod 4 moves the connecting plate 5 downward, and the connecting plate 5 moves the plug-in plates 802 on both sides downward, so that the plug-in plates 802 are inserted into the plug-in slots 804. Through compression, the locking block 811 moves to one side, which in turn causes the locking block 811 to move the moving block 820 and compress the first spring 806. After the plug-in plate 802 is inserted into place, the moving block 820 is reset by the rebound of the first spring 806 and inserted into the locking slot 801. The plug plate 802 is fixed, and the plug plate 802 is fixed to the upper mold 6 through the connecting plate 5 to prevent the upper mold 6 from shifting due to high pressure during use, which would cause the finished product to veer and affect the quality. Furthermore, the top of the protective plate 902 is attached to the bottom of the moving plate 1, so that the protective plate 902 blocks the gap between the upper mold 6 and the lower mold 2, preventing the injection molding material from spraying out and causing injury to surrounding personnel. When the moving plate 1 moves downward, it causes the support box 807 to move downward, which in turn causes the sliding sleeve seat 808 to move downward, and the sliding sleeve seat 808 causes the support rod 812 to move downward, thus causing the support rod 812 to move downward. 2. The rotating rod 819 drives the extrusion block 818 to move downward. After the bottom of the extrusion block 818 contacts the top of the connecting block 813, it is limited by the baffle 815, causing the extrusion block 818 to move to one side. This causes the extrusion block 818 to drive the support rod 812 to move to one side via the rotating rod 819. Through continuous movement, after one side of the extrusion block 818 is misaligned with the bottom of the connecting block 813, the connecting rod is reset by the rebound of the second spring 810. When the moving plate 1 moves upward, it drives the support box 807 to move upward. The support box 807 drives the support rod 812 to move upward via the sliding sleeve seat 808. 812 drives the transmission block 816 to move. When the transmission block 816 slides halfway in the transmission groove 814, the transmission block 816 drives the connecting block 813 to one side, so that the connecting block 813 drives the snap-fit ​​block 811 to slide out of the snap-fit ​​groove 801, so that the snap-fit ​​block 811 loses its fixing effect on the plug-in plate 802. When the transmission block 816 slides to two-thirds of the way in the transmission groove 814, the bottom of the limiting block 3 contacts the top of the moving plate 1, so that the limiting groove moves up through the sliding rod 4. The sliding rod 4 drives the upper mold 6 to move up through the connecting plate 5, so that the upper mold 6 separates from the lower mold 2 for material removal.

[0034] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An injection mold with a self-locking structure, comprising a moving plate (1) and a lower mold (2), characterized in that, The movable plate (1) is embedded with multiple sliding sleeves, and sliding rods (4) are slidably connected inside the sliding sleeves. A limit block (3) is connected to the top of each sliding rod (4), and the bottoms of the multiple sliding rods (4) are connected to the same connecting plate (5). An upper mold (6) is connected to the bottom of the connecting plate (5). Two locking devices (8) are provided on the top of the lower mold (2). Each locking device (8) includes a insertion slot (804) and a support box (807). A movable groove (805) is opened on one side of the insertion slot (804). A connector plate (802) is inserted into the connector slot (804). A snap-fit ​​groove (801) is provided in the connector plate (802). Movable grooves (803) are provided on both sides of the inner wall of the movable groove (805). Movable blocks (820) are slidably connected in the movable grooves (803). A first spring (806) is connected to one side of each of the two movable blocks (820). A snap-fit ​​block (811) is connected between the two movable blocks (820). A connecting block (813) is connected to one side of the snap-fit ​​block (811).

2. The injection mold with self-locking structure according to claim 1, characterized in that, The insertion slot (804) is opened on the top of the lower mold (2), and the other end of the first spring (806) is connected to one side of the inner wall of the moving slot (803). The moving block (820) has a through hole, and a support rod (821) is slidably connected in the through hole. The two ends of the support rod (821) are respectively connected to the two sides of the inner wall of the moving slot (803), and the first spring (806) is sleeved on the outside of the support rod (821).

3. The injection mold with self-locking structure according to claim 1, characterized in that, One side of the support box (807) is connected to one side of the movable plate (1). A sliding sleeve seat (808) is slidably connected inside the support box (807). A sliding rod (809) is slidably connected inside the sliding sleeve seat (808). The two ends of the sliding rod (809) are respectively connected to the two sides of the inner wall of the support box (807). A second spring (810) is sleeved on the outer wall of the sliding rod (809). The two ends of the second spring (810) are respectively connected to one side of the inner wall of the support box (807) and one side of the sliding sleeve seat (808). A support rod (812) is connected to the bottom of the sliding sleeve seat (808). A transmission block (816) is connected to one side of the support rod (812).

4. The injection mold with self-locking structure according to claim 3, characterized in that, The support rod (812) has a rotating groove, and a rotating rod (819) is rotatably connected in the rotating groove. One end of the rotating rod (819) is connected to an extrusion block (818), and the bottom of the extrusion block (818) is provided with an extrusion slope. The bottom of the support rod (812) is connected to a connecting plate (817), and a baffle (815) is connected to one side of the connecting plate (817).

5. The injection mold with self-locking structure according to claim 1, characterized in that, The connecting block (813) has a transmission groove (814) on one side, and the bottom of the transmission groove (814) has a clearance guide groove.

6. The injection mold with self-locking structure according to claim 1, characterized in that, The lower mold (2) has anti-deviation grooves (10) at the four corners of its top, and anti-deviation rods (7) are slidably connected in the anti-deviation grooves (10). The top of the anti-deviation rods (7) is connected to the bottom of the moving plate (1).

7. The injection mold with self-locking structure according to claim 1, characterized in that, The lower mold (2) is provided with two protective devices (9) on its top. Each protective device (9) includes a protective groove (901). The protective groove (901) is located on the top of the lower mold (2). The inner walls of the protective groove (901) are provided with sliding grooves on both sides. A slider (905) is slidably connected in the sliding groove. The two sliders (905) are connected to the same protective plate (902). The bottom of the protective plate (902) is provided with two fixing grooves. A fixing rod (903) is slidably connected in the fixing groove. The bottom of the fixing rod (903) is connected to the bottom of the inner wall of the protective groove (901). A third spring (904) is sleeved on the outer wall of the fixing rod (903). The two ends of the third spring (904) are respectively connected to the bottom of the protective plate (902) and the bottom of the inner wall of the protective groove (901).

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